The five most popular stories in the past 24 hours on CNN.com, according to NewsPulse.

One winner for Friday's Mega Millions lottery: One lucky winner in upstate New York chose the right numbers in Friday night's Mega Millions lottery, in which last-minute ticket sales increased the jackpot from $312 million to $319 million, New York Lottery spokeswoman Carolyn Hapeman said Saturday.

Van der Sloot lied about using laptop, source says: The laptop belonging to Joran Van der Sloot was turned off the night he is suspected of having killed a young Peruvian woman in Lima, suggesting he lied to investigators when he said he attacked her after she read an e-mail on his computer connecting him to missing American teenager, Natalee Holloway, a source said Friday.

Libyan woman tells her story of rape: Breakfast at a Tripoli hotel housing international journalists took a decidedly grim turn Saturday when a desperate Libyan woman burst into the building frantic to let the world know she had been raped and beaten by Moammar Gadhafi's militia.

A day after violent protests erupted in the restive city of Daraa, security forces opened fire at protesters in the coastal city of Latakia, witnesses said.

Anti-government demonstrations in Latakia had started peacefully before several people were wounded in a hail of gunfire as security forces tightened their control on access to the city, witnesses said. However, presidential spokeswoman Bouthaina Shaaban told state media that an unidentified group of gunmen opened fire at citizens and security forces.

Although the group allegedly entered Latakia "breaking and burning shops," security forces did not return fire, Shaaban told SANA, the country's official news agency.

Diver Bill Burt withÂ Mel Fisherâ€™s Treasures was looking for a section of the sunken Spanish galleon, Nuestra Senora de Atocha, this week. Instead, he came acrossÂ a 40- inch gold chain shimmering on the sandy ocean floorÂ about 30 miles from Key West.

The chain, whichÂ is believed to have come from the Atocha,Â contains a gold medallion and a gold cross. Â The cross appears to be, according to the salvors, inscribed with Latin letters. Â It is estimated to be worth $250,000.

Mel Fisherâ€™s team found a portion of the Atocha and $450 million worth of artifacts and treasure in 1985. Â But the contents of the Atochaâ€™s sterncastle, a wooden, fort-shaped area at the back of ship, have never been recovered. The Atocha sank during a hurricane in 1622. Â A second hurricane is believed to have torn the sterncastle from the Atocha and carried it miles away.

1982: Groundbreaking at Vietnam Memorial – On March 27th 1982 a group of 125 veterans gathered between the Lincoln Memorial and the Washington Monument to break ground at the future site of the Vietnam Veterans Memorial. Vietnam veteran Jan Scruggs spearheaded the movement to lobby congress and raise money through private funds to build the memorial. The black granite wall holds the names of 58,267 men and women who were killed or remain missing in action.

Breakfast at a Tripoli hotel housing international journalists took a decidedly grim turn Saturday when a desperate Libyan woman burst into the building frantic to let the world know she had been raped and beaten by Moammar Gadhafi's militia.

Her face was heavily bruised. So were her legs. She displayed blood on her right inner thigh.

She said her name was Eman al-Obeidy. She was well-dressed and appeared to be a well-to-do middle-aged woman. She spoke in English and said she was from the rebel stronghold of Benghazi and had been picked up by Gadhafi's men at a checkpoint east of Tripoli.

A magnitude 9.0 earthquake hit northern Japan on March 11, triggering tsunamis that caused widespread devastation and crippled a nuclear power plant. Are you in an affected area? Send an iReport. Read the full report on the quake's aftermath and check out our interactive explainer on Japan's damaged nuclear reactors.

[5:30 a.m. ET Saturday, 6:41 p.m. Saturday in Tokyo] An official with the Tokyo Electric Power Company, which runs the Fukushima Daiichi nuclear power plant, apologized Saturday and said the exposure of three workers to highly radioactive water could have been avoided with better communication.

Hideyuki Koyama said tests of water found in the basement of the No. 1 reactor's turbine building on March 18 showed high levels of radiation.

That fact - and a general sense that water accumulating in turbine and others buildings around the plant may be dangerously radioactive - did not appear to resonate on March 24 during an operation in the No. 3 reactor's turbine building. On that date, three workers were exposed to between 173 and 181 millisieverts of radiation, including two with direct exposure on their skin, while laying cable.

Koyama said that radiation alarms went off while the men were working, but they continued with their mission for between 40 and 50 minutes assuming it was a false alarm.

An official with the Tokyo Electric Power Co. - which operates the facility - told reporters Saturday that water samples from the turbine buildings for the Nos. 1 and 2 reactors similarly found high levels of radiation.

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